Question

The coefficient of friction between the body being slided over the wedge and the wedge surface is generally determined by ____________

(a) Written over the Body

(b) Experiments

(c) Weighing the body

(d) Measuring length of the body

The question was posed to me during an interview for a job.

My enquiry is from Wedges in portion Friction of Engineering Mechanics

Answer 1

The correct answer is (b) Experiments

To explain I would say: The coefficient of the friction is generally determined by the help of experiments. Many experiments are done on the body. Try and error methods are involved. And the final observations are being taken out. Then average of all the final answers resulted in the experiments is done.